The zucchini or courgette! Plant one in the garden and you'll have them growing out your ears!
Zucchini bread, zucchini soup, zucchini on the BBQ, zucchini in salads...
At the end of each summer, you'll never want to see another zucchini in your life!
As an afterthought: there's no way a photograph of a zucchini can appear polite.